 .ico{background-image:none;position: relative;width:20px;height:20px;display: inline-block;vertical-align: middle; margin-right: 2px;}
.ico::before ,.ico::after,.ico>z,.ico>z::before,.ico>z::after{content:'';position:absolute;}
a:hover .ico::before,a:hover .ico::after,a:hover .ico z,a:hover .ico z::before,a:hover .ico z::after,a.ico:hover::before,ico:hover::after,ico:hover z,ico:hover z::before,a.ico:hover z:after{border-color:blue;}
a{text-decoration: none;}
//列表
.ico-list::after{width:5px;height:10px;border-top:5px solid grey;border-bottom:5px solid grey;}
.ico-list::before{width:5px;height:5px;border-top:5px solid grey;top:7px;left:0px;}
.ico-list z{width:13px;height:10px;border-top:5px solid grey;border-bottom:5px solid grey;right:0px;}
.ico-list z::before{width:13px;border-top:5px solid grey;left:0px;top:2px;}
//平铺
.ico-repeat::before{width:5px;height:10px;border-top:5px solid grey;border-bottom:5px solid grey;}
.ico-repeat::after{width:5px;height:10px; border-top:5px solid grey;border-bottom:5px solid grey;left:7.5px; }
.ico-repeat z{width:5px;height:10px; border-top:5px solid grey;border-bottom:5px solid grey;right:0px;}
.ico-repeat z::before{width:10px; height:5px;border-left:5px solid grey;border-right:5px solid grey;top:2.5px;left:-15px;}
.ico-repeat z::after{width:5px;height:5px;border-top:5px solid grey;left:-7.5px;top:2.5px;}
//文件夹
.ico-open::before{width:8px;height:12px;border-left: 2px solid grey;border-top:2px solid grey;}
.ico-open:after{width:10px;height:2px;border-top: 2px solid grey;border-right:2px solid grey;left:7px;top:2px;}
.ico-open z{width:13px; height:8px;border:2px solid grey;left:4px;top:6px;}
//复制文件夹
.ico-copy::before{width:9px;height:11px;border:2px solid grey;top:5px;}
.ico-copy::after{width:9px;height:2px;border-top:2px solid grey;border-left:2px solid grey;left:5px;top:1px}
.ico-copy z{width:2px ;height:9px;border-bottom:2px solid grey;border-right:2px solid grey;left:12px;top:3px;}
//注意事项





























